Obtaining certificate chain for upenn.unl.edu, one moment while we download the upenn.unl.edu certificate and related intermediate certificates...
Refreshing certificate chain and revocation status for upenn.unl.edu, one moment while we re-check the upenn.unl.edu certificate and related intermediate certificates...
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Revocation check via OCSP and CRL for upenn.unl.edu failed
Sorry, the request for upenn.unl.edu could not be completed...
We could not load the certificate for upenn.unl.edu, it might not exist or we could not reach the server, complete the TLS handshake, etc.
Revoked certificates can't and should not be trusted, these certificate will cause errors like "NET::ERR_CERT_REVOKED" in browsers and expose a security risk.